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Obtaining momentum distibution from Green's functions

  1. Mar 29, 2012 #1
    How does one obtain the momentum distribution (n_k) from the green functions Is there a software for it if so where can I get it
  2. jcsd
  3. Mar 30, 2012 #2
    Momentum of what, in which system and under what conditions?

    Does this help?

    http://www2.fz-juelich.de/nic-series/volume31/mavropoulos.pdf [Broken]
    Last edited by a moderator: May 5, 2017
  4. May 2, 2012 #3
    I am working on electron correlation in an 8 X8(64 site) square lattice at half filling using the 2-D Hubbard model. using quantum monte Carlo I was able to obtain the Green functions. To get the momentum distribution I am required to calculate the Fourier transform of the Green function. The problem is I do not know how to go about calculating the Green functions and plotting it. Can it be done with Matlab?
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